--- a/eric6/WebBrowser/SiteInfo/SiteInfoDialog.py	Mon Mar 01 17:48:43 2021 +0100
+++ b/eric6/WebBrowser/SiteInfo/SiteInfoDialog.py	Tue Mar 02 17:17:09 2021 +0100
@@ -48,7 +48,7 @@
         """
         super(SiteInfoDialog, self).__init__(parent)
         self.setupUi(self)
-        self.setWindowFlags(Qt.Window)
+        self.setWindowFlags(Qt.WindowType.Window)
         
         # put icons
         self.tabWidget.setTabIcon(
@@ -167,7 +167,8 @@
         if self.imagesTree.columnWidth(0) > 300:
             self.imagesTree.setColumnWidth(0, 300)
         self.imagesTree.setCurrentItem(self.imagesTree.topLevelItem(0))
-        self.imagesTree.setContextMenuPolicy(Qt.CustomContextMenu)
+        self.imagesTree.setContextMenuPolicy(
+            Qt.ContextMenuPolicy.CustomContextMenu)
         self.imagesTree.customContextMenuRequested.connect(
             self.__imagesTreeContextMenuRequested)
     
@@ -243,7 +244,7 @@
         """
         Private slot handling the loading of an image.
         """
-        if self.__imageReply.error() != QNetworkReply.NoError:
+        if self.__imageReply.error() != QNetworkReply.NetworkError.NoError:
             return
         
         data = self.__imageReply.readAll()